One of the first pre-1950 sets I finished, and it wasn't all that easy. Almost all of them are either Authentic, Poor or Fair, except the DiMaggio which is a BVG 4.5.
I don't want to fill out the pictures since I have the set, but here is the Foxx:
Also, I have seen variations in back ink color on both the 1943 and 1949 issues. the only consistent I see on the 1949 set is the presence of a card number on the back. I also will note that the orientation of the backs is all over the place.